If abdominal aortic aneurysm is suspected, the examination methods mainly include abdominal palpation, abdominal X-ray, abdominal ultrasound and CTA. 1. Abdominal palpation: Abdominal palpation by specialized doctors can touch the pulsating mass in the abdomen, which is consistent with the frequency of heart beat. 2. Abdominal X-ray: Through abdominal X-ray, the presence of calcium deposits in the aneurysm wall can be observed. 3. Abdominal ultrasound: through abdominal ultrasound, it can be found that the abdominal aorta is widened, and the shape of the abdominal aorta can be observed, including the size of the aneurysm, with high accuracy. 4. CTA: commonly used in the diagnosis of abdominal aortic aneurysm, it can clearly see the shape and surrounding tissue structure, even the retroperitoneal edema. Besides, abdominal CT scanning plus enhancement, angiography, MRA and so on can be used for the examination of abdominal aortic aneurysm. If abdominal aortic aneurysm is suspected, it is recommended to go to the vascular surgery department of regular hospitals as soon as possible, improve the relevant examinations according to the preliminary judgment of professional doctors, and treat it as soon as possible to avoid delaying the condition.